LAKE FOREST, Ill. -- Chicago Bears?receiver Alshon Jeffery has been suspended without pay for the next four games for violating the NFL policy on performance-enhancing substances.In a statement released Monday, Jeffery said he took a recommended supplement to battle inflammation, and it contained an ingredient on the leagues banned substance list.I take full responsibility, and Im deeply upset with myself for not doing the proper research on this supplement, he said. I want to apologize to my family, the Bears organization, my teammates and Bears fans. I will work hard to earn back the respect and trust of the Bears nation and look forward to being back on the field.Jeffery is eligible to return to Chicagos active roster following the Bears game against the Detroit Lions on Dec. 11.Meanwhile, Bears guard Kyle Long is out indefinitely, a source told ESPNs Adam Schefter on Sunday night. Long was carted off with a right ankle injury in Sundays 36-10 loss to the Tampa Bay Buccaneers.?Jeffery -- playing under the franchise tag worth $14.6 million in 2016 -- leads the team with 630 receiving yards. He is second on the club with 40 receptions.?Entering Week 10, Jeffery ranked eighth in the league in receiving yards since 2013, and he is fifth in franchise history with 13 games of 100-plus receiving yards.Obviously, we are very disappointed, coach John Fox said Monday.?I think hes fairly embarrassed about it, but well support him and welcome him when he gets back after serving his suspension.I think the league contacted us and obviously talked to Alshon. Those conversations will stay between us, but were obviously very disappointed, and well treat it like an injury [absence] moving forward.Jeffery, 26, will be a free agent this offseason, unless the Bears again apply their franchise tag to him.Already without 2015 first-round pick Kevin White (injured reserve), the Bears will be perilously thin at receiver during Jefferys four-game absence. After veteran Eddie Royal, the most productive player on the active roster is second-year wideout Cameron Meredith, who originally played quarterback in college at Illinois State University.In five seasons, all with the Bears, Jeffery has?292 receptions for?4,358 yards and 25 touchdowns. Nike Air Max Plus Cheap . Hazard cut in from the left and scored with a swerving right-footed shot for ninth goal of the season, which proved to be enough for the victory despite Chelseas forwards again lacking a cutting edge up front. Nike Air Max Plus Australia . 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Thats not a comment on the suspension that banished the Portland Winterhawks general manager and coach from his Western Hockey League teams bench for most of the 2012-13 season.Max Verstappen made an impressive start to his Red Bull career in Friday practice at Barcelona - but was still beaten by Daniel Ricciardo in both sessions. Driving the RB12 car for the first time, Verstappens fastest time was within two tenths of Ricciardos best - a commendable effort in machinery that remains unfamiliar to the Dutch teenager despite intensive running in the Red Bull simulator since his sudden promotion a week ago.By contrast, Daniil Kvyat, who lost his seat to Verstappen at Red Bull, was over a second shy of Carlos Sainzs outstanding effort as the young Spaniard wrestled his Toro Rosso car to fifth - just ahead of Ricciardo. Im happy - for the first day I cant complain, said Verstappen. I am still learning a lot about the car of course, but its getting better and better all the time. We did a lot of work, a lot of laps and I think thats the most important thing for me at the moment.Its completely different, the seat position, the steering wheel position the switches, the procedures. But I think it was a very good day for me today. How the Red Bull swappers compared in Spanish GP Friday practice Driver Team Time to leader Position Carlos Sainz Toro Rosso +1.209 5th Daniel Ricciardo Red Bull +1.272 6th Max Verstappen Red Bull +1.dddddddddddd.453 8th Daniil Kvyat Toro Rosso +2.453 15th Verstappen was also within a tenth of Ricciardo during Practice One, prompting team boss Christian Horner to enthuse: He has done remarkably well, his first flying lap in the car was very impressive.Hes settled in, but what I think it demonstrates as well is that the simulators are so good these days the guys turn up here pretty well prepared.In full: Christian Horner Q&AAccording to Horner, the Verstappen-Ricciardo partnership has the potential to become the best in F1.You can see he is pretty special, he came into Formula 1 last year and had a sensational first year and has carried that momentum into this year, the Red Bull boss added of his new charge. Vote: The best line-up in F1 Lewis and Nico? Max and Daniel? Fernando and Jenson? Or Seb and Kimi? Watching from trackside, Sky F1 analyst Martin Brundle added: For a teenager, his confidence is extraordinary. His first flying lap was immediately on the pace and he was right in there at the end of the session with Daniel Ricciardo. Its no surprise because thats how good he is.Daniel probably thought that he had Daniil Kvyat well covered and even if he is in the form of his life he will have one eye on this young tornado who has joined the team.Watch the Spanish GP live on Sky Sports F1. The race starts at 1pm on Sunday, with build-up underway at 11.30am. Or watch the race without a contract for £6.99 on NOW TV. Also See: Sainz stars in Barca practice Christian Horner Q&A ' ' '